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AK: Allow printing wide characters using %ls modifier

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safarp 2022-03-20 09:53:52 +01:00 • committed by Ali Mohammad Pur
parent 824cf570d3
commit 704e1d13f4
4 changed files with 84 additions and 2 deletions
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16
AK/PrintfImplementation.h
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@ -11,6 +11,7 @@
#include <AK/Types.h>
#include <math.h>
#include <stdarg.h>
#include <wchar.h>
#ifdef __serenity__
extern "C" size_t strlen(const char*);
@ -277,8 +278,8 @@ ALWAYS_INLINE int print_octal_number(PutChFunc putch, CharType*& bufptr, u64 num
return field_width;
}
template<typename PutChFunc, typename CharType>
ALWAYS_INLINE int print_string(PutChFunc putch, CharType*& bufptr, const char* str, size_t len, bool left_pad, size_t field_width, bool dot, size_t precision, bool has_fraction)
template<typename PutChFunc, typename T, typename CharType>
ALWAYS_INLINE int print_string(PutChFunc putch, CharType*& bufptr, T str, size_t len, bool left_pad, size_t field_width, bool dot, size_t precision, bool has_fraction)
{
if (has_fraction)
len = min(len, precision);
@ -339,6 +340,17 @@ struct PrintfImpl {
ALWAYS_INLINE int format_s(const ModifierState& state, ArgumentListRefT ap) const
{
// FIXME: Narrow characters should be converted to wide characters on the fly and vice versa.
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html
// https://pubs.opengroup.org/onlinepubs/9699919799/functions/wprintf.html
#ifndef KERNEL
if (state.long_qualifiers) {
const wchar_t* sp = NextArgument<const wchar_t*>()(ap);
if (!sp)
sp = L"(null)";
return print_string(m_putch, m_bufptr, sp, wcslen(sp), state.left_pad, state.field_width, state.dot, state.precision, state.has_precision);
}
#endif
const char* sp = NextArgument<const char*>()(ap);
if (!sp)
sp = "(null)";